Not specific to Kapyong, but it was the 2nd Bn of the PPCLI that fought there and received the US Presidential Unit Citation.
http://www. newswire.ca/en/story/1323579/canada-post-celebrates-princess-patricia-s-canadian-light-infantry-100th-anniversary-with-commemorative-envelope
https://www. canadapost.ca/shop/envelopes/collectible-envelopes/p-342008.jsf?execution=e1s1
http://www. cmp-cpm.forces.gc.ca/dhh-dhp/his/ol-lo/vol-tom-3/par2/ppclir-eng.asp